.card{
    width: 800px;
    height: 200px;
    margin:20px auto;
    background-color: #e0e3e4;
    position: relative;
    overflow: hidden;
    .inner{
        position: absolute;
        height: 100%;
        width: 100px;
        left:30px;
        background-color: red;
    }
}